An Opto-Bio-Hydrodynamic Platform for Instructing Cardiac Left-Right Asymmetry Development

Area of Science:

• Developmental Biology
• Biophysics
• Bioengineering

Background:

• Ciliary dynamics in the left-right organizer (LRO) are crucial for establishing cardiac laterality via biomechanical signaling.
• Current methods for manipulating ciliary motion lack precision and control for developmental interventions.

Purpose of the Study:

• To present a novel Opto-Bio-Hydrodynamic platform for precise, spatiotemporal modulation of ciliary motion.
• To investigate the use of programmable near-infrared light for instructing cardiac left-right asymmetry development.

Main Methods:

• Utilized a 1064-nm light beam for real-time modulation of ciliary motion.
• Demonstrated direct optical trapping and indirect optical regulation for ciliary synchronization.
• Established mechanistic links between optical tuning, ciliary dynamics, flow signaling, and organ asymmetry.

Main Results:

• Achieved precise spatiotemporal control over ciliary beating and motion.
• Induced coordinated ciliary rotation leading to enhanced recirculating flow.
• Successfully rescued methylcellulose-induced cardiogenesis abnormalities in a controlled manner.

Conclusions:

• The Opto-Bio-Hydrodynamic platform offers non-invasive, precise, and programmable control of ciliary dynamics.
• This strategy provides valuable insights into congenital heart defects and developmental mechanisms.
• Presents a promising platform for developmental bioengineering and mechanobiological therapeutics.